An instructor computed a least squares regression line to predict final course percentage based on Exam 1. She got the following
formula: yhat=34.28+0.5897x. Suppose that a student who made a grade of 76 on Exam 1 had a final percentage grade of 71.66%. What is the residual?
1 answer:
Answer:
8.0372
Step-by-step explanation:
given that an instructor computed a least squares regression line to predict final course percentage based on Exam 1.
The regression equation was found out as

When a student makes a grade of 76 one exam 1, and 71.66% in final exam we have

Substitute to get the estimated y as per regression line as

Residual = difference between y hat and y
= 
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